Ignition distributor



Oct. 29, 1940. s w z 2,220,003

IGNITION DISTRIBUTOR Filed Oct. 28, 1938 Wren/0r:

Patented Oct. 29, 1940 UNITED STATES PATENT OFFICE 2,220,003 IGNITIONmsmmo'roa Application October 28, 1938, Serial No. 237,565 In GermanyNovember 18, 1937 1 Claim.

In order that high frequency oscillations emitted by the ignitioninstallations in motor vehicles shall cause no disturbances in thesupply of news by wireless, the ignition distributors pres- 5 ent in theignition installations are frequently inserted in a metal screeningcasing.

The screening of ignition distributors according to the presentinvention is brought about in an especially simple manner by uniting thedis- 10 tributor and the screening casing to form a singleconstructional part of metal which is sealed by a cover, also of metal.

The present invention is more particularly described with reference tothe accompanying drawing which illustrates one form of construction byway of example and in which Figure l is a sectional view, and

Figure 2 is a plan view corresponding thereto.

In the drawing, a is a distributor and screen- 20 ing casing consistingof a die casting part, which is sealed by a cover 17 also made from adie casting. The casing a and cover I: are fastened together by twofastening screws (not shown). The distributor shaft is bedded in themetal casing at the parta. The primary current interrupter d isaccommodated in the lower part of the casing a. In addition, it containsa pocket I separated from the rest of the casing part by the wall e, inwhich pocket the condenser 9 con- 30 nected in parallel to theinterrupter d is inserted.

The condenser g is held fast in-its operative position by the strap h,which bears on the insulation of the connection terminal 2' placed uponthe condenser. The primary current connection is introduced through thesleeve k, which is pressed into the casing wall and caulked therein, andconnected with the connection terminal 1. The upper part of the casing ais filled by the distributor disc, which consists of two parts I and mand which is supported on the rim n provided in the interior of thecasing and is protected here against turning. The ducts o serve for theremoval of air from the distributor casing. For holding together theparts 1 and m and for holding fast the distributor disc, there is onlyused the plate spring 12, which is firmly riveted in the cover and whichpresses on the Fdistributor disc. Through the opening q between thecasing a and the cover b, which opening is strengthened by the guidecollar s, which is firmly held in place by means of the nut r, the hightension leads are conducted from the distributor to the sparking plugs.

I declare that what I claim is:

Ignition distributor apparatus comprising a distributor and a screeningcasing formed as a single integral metallic unit having an internalring, a metallic cover for sealing said unit, a distributor disc adaptedto be supported on said internal rim and a spring carried by saidmetallic cover for holding said distributor disc on said rim.

KARL SCHWEIZER.

